Holographic record carrier, the hologram device and a recording method

Hologram record carrier is a holographic record carrier recording or reproducing information by light irradiation is performed, and the hologram recording layer to store therein the optical interference pattern by components of coherent reference light and signal light as a diffraction grating a reflective functional layer non-reflective portion is expressed in the irradiated site sensitive to the strength of the laminated and irradiated light on the opposite side of the light incidence side of the holographic recording layer, made of.